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bh=4GHa3lNHMkLWKE81S5CI6BlV5V3PtJ3VoW2M7li/Edg=; b=LCHZ571RWZ7U7M8TbTFAHthgTx+h87AllccsZvqf2kcMsQ7Y6z0dBhWg78XiFpgPtu91DG qWApgX2wU/Juan6iBKL3phpPFPVL3+EwYmzzANWuBOrXD/uBQIw81qBl1I7xItXgp3vZvX Xib49WAQukU1h+vXVE4qAYVL/lhiyo1f6zSRWyUNDhdoy+VPOvFePPcY2qtj/F3bsQ96Rk nUa4eIqo8mPww930rz2amNUzrdx1QeoVuS/DBqwWn6KN9EVezFvrKjBGq2QxblAZgp2wDu VjjjpxZUUKEo9ZeDuFfnsBduHrEe5Y7iuPSuK9fiinzcDoijKLR46VRCYuAPVQ== From: Miquel Raynal To: fzz <1768315307@qq.com> Cc: Vignesh Raghavendra , Richard Weinberger , linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] mtd: spinand: cache the last read page to avoid redundant SPI operations In-Reply-To: (fzz's message of "Tue, 8 Sep 2026 11:25:30 +0800") References: User-Agent: mu4e 1.12.12; emacs 30.2 Date: Tue, 08 Sep 2026 11:39:49 +0200 Message-ID: <87bja8ulne.fsf@bootlin.com> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260908_023955_609650_EDCEE980 X-CRM114-Status: GOOD ( 12.16 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org SGVsbG8gWm9uZ3poZW4sCgpPbiAwOC8wOS8yMDI2IGF0IDExOjI1OjMwICswOCwgZnp6IDwxNzY4 MzE1MzA3QHFxLmNvbT4gd3JvdGU6Cgo+IEZyb206IFpvbmd6aGVuIEZlbmcgPDE3NjgzMTUzMDdA cXEuY29tPgo+Cj4gV2hlbiBzcXVhc2hmcyByZWFkcyBmaWxlcyB0aHJvdWdoIG10ZGJsb2NrLCB0 aGUgbXRkYmxvY2sgbGF5ZXIKPiBzcGxpdHMgSS9PIGludG8gNTEyLWJ5dGUgc2VjdG9ycy4gRm9y IGEgNEstcGFnZSBTUEkgTkFORCwgdGhpcwo+IG1lYW5zIHJlYWRpbmcgdGhlIHNhbWUgcGFnZSA4 IHRpbWVzICg0MDk2IC8gNTEyKSwgZ2VuZXJhdGluZyA3eAo+IHJlZHVuZGFudCBTUEkgcmVhZC1m cm9tLWNhY2hlIG9wZXJhdGlvbnMuIEVhY2ggc3VjaCBvcGVyYXRpb24KPiBpbnZvbHZlcyBhIGZ1 bGwgU1BJIGJ1cyB0cmFuc2FjdGlvbiwgc2lnbmlmaWNhbnRseSBzbG93aW5nIGRvd24KPiBib290 IHRpbWUgYW5kIGZpbGUgYWNjZXNzLgo+Cj4gQ2FjaGUgdGhlIGxhc3Qgc3VjY2Vzc2Z1bGx5IHJl YWQgcGFnZSBpbiBzcGluYW5kX2RldmljZSB0byBhdm9pZAo+IHRoZXNlIHJlZHVuZGFudCBvcGVy YXRpb25zLiBXaGVuIHRoZSBzYW1lIHt0YXJnZXQsIGVyYXNlYmxvY2ssCj4gcGFnZX0gaXMgcmVx dWVzdGVkIGNvbnNlY3V0aXZlbHksIHRoZSBkYXRhIGlzIHNlcnZlZCBkaXJlY3RseQo+IGZyb20g dGhlIGJvdW5jZSBidWZmZXIgKGRhdGFidWYpIHZpYSBtZW1jcHksIHNraXBwaW5nIHRoZSBTUEkK PiB0cmFuc2FjdGlvbiBlbnRpcmVseS4KPgo+IFRoZSBjYWNoZSBpcyBpbnZhbGlkYXRlZCBvbiB3 cml0ZSBhbmQgZXJhc2Ugb3BlcmF0aW9ucy4gUkFXIHJlYWRzLAo+IE9PQiByZWFkcywgYW5kIGNv bnRpbnVvdXMgcmVhZHMgYXJlIGV4Y2x1ZGVkIGZyb20gY2FjaGluZyB0bwo+IG1haW50YWluIGNv cnJlY3RuZXNzLgo+Cj4gU2lnbmVkLW9mZi1ieTogWm9uZ3poZW4gRmVuZyA8MTc2ODMxNTMwN0Bx cS5jb20+CgpTYXNoaWtvIHJlcG9ydHMgaW50ZXJlc3Rpbmcgd2FybmluZ3MsIGNhbiB5b3UgcGxl YXNlIGFkZHJlc3MgdGhlbT8KClRoYW5rIHlvdSBmb3IgeW91ciBjb250cmlidXRpb24hIFNhc2hp a28gQUkgcmV2aWV3IGZvdW5kIDIgcG90ZW50aWFsIGlzc3VlKHMpIHRvIGNvbnNpZGVyOgotIFtD cml0aWNhbF0gVGhlIHBhZ2UgY2FjaGluZyBtZWNoYW5pc20gdXNlcyB0aGUgc2hhcmVkIGJvdW5j ZSBidWZmZXIKYHNwaW5hbmQtPmRhdGFidWZgIHRvIHN0b3JlIGNhY2hlZCBkYXRhLCBidXQgZmFp bHMgdG8gdW5jb25kaXRpb25hbGx5CmludmFsaWRhdGUgdGhlIGNhY2hlIHdoZW4gdGhpcyBidWZm ZXIgaXMgb3ZlcndyaXR0ZW4gYnkgb3RoZXIKb3BlcmF0aW9ucywgbGVhZGluZyB0byBzZXZlcmUg Y3Jvc3MtcGFnZSBkYXRhIGNvcnJ1cHRpb24uCi0gW0NyaXRpY2FsXSBQYWdlcyB3aXRoIHVuY29y cmVjdGFibGUgRUNDIGVycm9ycyBhcmUgcHJlbWF0dXJlbHkgY2FjaGVkCmFzIHZhbGlkLCBjYXVz aW5nIHN1YnNlcXVlbnQgcmVhZHMgdG8gYnlwYXNzIEVDQyBjaGVja3MgYW5kIHNpbGVudGx5CnJl dHVybiBjb3JydXB0ZWQgZGF0YSBhcyBzdWNjZXNzZnVsLgoKVGhhbmtzLApNaXF1w6hsCgpfX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTGludXgg TVREIGRpc2N1c3Npb24gbWFpbGluZyBsaXN0Cmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21h aWxtYW4vbGlzdGluZm8vbGludXgtbXRkLwo=